p-Dichlorobenzene
Westside Rural Water Supply Corporation
p-Dichlorobenzene is a carcinogenic insecticide used in mothballs, and added to deodorant blocks made for trash cans and toilets. Long-term exposure can cause liver damage and kidney problems.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 6 ppb
The EWG Health Guideline of 6 ppb for p-dichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 75 ppb
The legal limit for p-dichlorobenzene, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1980s. This limit may not fully protect against the risk of cancer due to p-dichlorobenzene exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-10-30 | Q1843596003 | ND |
| 2018-10-30 | Q1843596006 | ND |
| 2018-10-30 | Q1843596007 | ND |
| 2018-10-30 | Q1843596002 | ND |
| 2019-05-07 | Q1920849002 | ND |
| 2019-05-07 | Q1920849004 | ND |
| 2019-05-07 | Q1920849006 | ND |
| 2019-05-07 | Q1920849008 | ND |
| 2020-01-23 | Q2002763003 | ND |
| 2020-01-23 | Q2002763005 | ND |
| 2020-01-23 | Q2002763007 | ND |
| 2020-01-23 | Q2002763009 | ND |
| 2021-01-25 | Q2101699010 | ND |
| 2021-01-25 | Q2101699016 | ND |
| 2021-01-25 | Q2101699014 | ND |
| 2021-01-25 | Q2101699012 | ND |
| 2022-11-10 | Q2233973002 | ND |
| 2022-11-10 | Q2233973004 | ND |
| 2022-11-10 | Q2233973006 | ND |
| 2022-11-10 | Q2233973008 | ND |
| 2023-03-20 | Q2310439002 | ND |
| 2023-06-21 | Q2323858001 | ND |
| 2023-06-21 | Q2323858003 | ND |
| 2023-06-21 | Q2323858005 | ND |